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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Ayling; Laurence J.
Address:
Camberly, GB
No. of patents:
3
Patents:












Patent Number Title Of Patent Date Issued
7322418 Continuous circulation drilling method January 29, 2008
A method for drilling wells in which the tubular can be added or removed from the drill string whilst mud and drilling fluids being circulated continuously and kept separated from the environment to reduce pollution. A connector is used with an inlet and outlet for the mud etc. and which
6739397 Continuous circulation drilling method May 25, 2004
Methods and apparati are disclosed for continuous circulation of drilling fluids while adding or removing tubulars to and from a drill string, and also for continuing drilling during the addition or removal of tubulars to and from the drill string.
6688394 Drilling methods and apparatus February 10, 2004
A method for drilling wells in which the tubular (5) can be added or removed from the drill string (17) whilst the drill is rotating with the mud and drilling fluids being circulated continuously and kept separated from the environment to reduce pollution. A connector is used with an










 
 
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